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Identify the unknown compound X using mass spectrometry. The compound has a molecular formula of C8H10O2 and a mass spectrum with a molecular ion peak at m/z 150 and base peak at m/z 77. Provide the structural formula of the compound and explain the fragmentation pattern observed in the mass spectrum.
asked
Jan 30
in
Analytical Chemistry
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1
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70
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A student needs to calculate the heat of mixing for a 50 mL solution containing 0.1 M HCl and 0.1 M NaOH. The temperature of the solution is 25°C and the density is 1 g/mL. The enthalpy of neutralization for HCl and NaOH is -57.3 kJ/mol. Determine the heat of mixing for the solution.
asked
Jan 22
in
ThermoChemistry
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1
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87
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A chemistry student needs to determine the precipitate formed when 50 mL of 0.2 M silver nitrate solution is mixed with 75 mL of 0.1 M potassium chloride solution. What is the mass of the precipitate formed and what is the percent yield of the reaction?
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Jan 22
in
Chemical reactions
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35
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Who are the in-group?
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Jan 20
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Psychology
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1
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69
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What is solution-focussed brief therapy?
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Jan 20
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Psychology
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1
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79
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Please compare depression and bipolar disorder.
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Jan 17
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Psychology
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1
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64
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According to the trait theory of personality, what are the five main traits?
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Jan 16
in
Psychology
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1
answer
47
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When was the 'Stereotype Content Model' introduced?
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Jan 15
in
Psychology
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1
answer
11
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Who are considered to be the pioneers of humanistic psychology?
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Jan 15
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Psychology
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1
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73
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What is systematic desensitisation?
asked
Jan 14
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Psychology
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1
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24
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When matter reacts, there can be what that comes from nowhere and is unaccounted for?
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Jan 8
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Science
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1
answer
89
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What is the use of technology to change the genetic makeup of living things for human purposes?
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Jan 7
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Science
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1
answer
55
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What is the climate of a small area called?
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Jan 6
in
Science
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1
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39
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What class of animals, translated as “head foot”, includes octopuses, squids, cuttlefish, and nautilus?
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Jan 6
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Science
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1
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36
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What are the messenger molecules of the endocrine system?
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Jan 3
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Science
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1
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45
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Radioisotopes may vary greatly in their rate of decay, decaying faster if their nuclei are more what?
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Dec 31, 2024
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Science
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34
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Living organisms release carbon dioxide into the atmosphere by what method?
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Dec 31, 2024
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Science
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1
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29
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In which organ are bile acids made
asked
Dec 31, 2024
in
Science
0
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1
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63
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Structural adaptations in flying animals often contribute to reduced what?
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Dec 27, 2024
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Science
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